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Figure 5


Fig. 5. Dive profiles and vertical distribution of prey. (A) Dive profiles (yellow line) and lunges (green circles) are superimposed onto prey-field maps generated from echosounder data which show increasing density of zooplankton (red, highest; blue, medium; white, lowest) and the sea floor (green line). (B) Relative krill density as a function of depth derived from the nautical area scattering coefficient (m2 target nautical mi–2) integrated every 15 sx10 m along the path of the foraging whale (left graph). The right graph shows the depth distribution where each lunge was executed during the foraging bout. The dashed line shows the mean value for lunge depth. The overlaying grid corresponds to dimensions that are 10 m deep by 1 min long.





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